TY - JOUR T1 - Double Refraction and Dispersion in Iceland Spar: An Experimental Investigation, with a Comparison with Huyghen's Construction for the Extraordinary Wave JF - Philosophical Transactions of the Royal Society of London (1776-1886) VL - 171 SP - 421 EP - 449 PY - 1880/01/01/ UR - http://dx.doi.org/10.1098/rstl.1880.0011 M3 - doi:10.1098/rstl.1880.0011 AU - Glazebrook, R. ER -